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Leukotriene antagonists
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Patent number 5,017,583
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Issue date May 21, 1991
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Merck Frosst Canada, Inc.
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Robert N. Young
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Leukotriene antagonists
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Patent number 4,918,092
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Issue date Apr 17, 1990
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Merck Frosst Canada, Inc.
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Richard Frenette
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C07 - ORGANIC CHEMISTRY
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4-oxo-benzopyran carboxylic acids
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Patent number 4,609,744
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Issue date Sep 2, 1986
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Merck Frosst Canada Inc.
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Robert N. Young
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE